Merton, I seem to remember reading something about your queue problem a couple of days ago I think one queue for all servers is better because that guarantees that people who came first will be served first.

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Originally Posted by MariaV

I didn't read back eiter. Has Riga got loads of snow? In Tallinn it's impossible to move around.

Yes, it's been below zero temperature for 3 weeks and we've had lots of snow in that time and it hasn't melted. Now it's just -3 so a bit is starting to melt and then we have ice so it's even worse

I was thinking of burning wood or oil from a tank within the room In that case the energy stored in the wood (the coal we burn) is part of the initial energy content of the room and burning it decreases the energy content.

If we assume a closed system it is pretty straight forward. The energy does not change due to energy conservation, the entropy is increased.

What is assumed in my problem is, that it is a "normal" living room. You can assume an electric heater that is driven by an outside source. The room itself is not perfectly closed just like your living room is (likely) not a perfectly closed system.

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If we assume a closed system it is pretty straight forward. The energy does not change due to energy conservation, the entropy is increased.

What is assumed in my problem is, that it is a "normal" living room. You can assume an electric heater that is driven by an outside source. The room itself is not perfectly closed just like your living room is (likely) not a perfectly closed system.

no real system is perfectly closed but for modelling purposes you have to make some simplifications or you'll never be able to do the math